Single Serving Reusable Brewing Material Holder

ABSTRACT

A single serving beverage filter cartridge is formed by placing a single serving portion of brewing material into a reusable coffee holder having a lid and a base. The reusable coffee holder includes a recessed annular region at the bottom of a base of the holder and is insertable into a cartridge housing of a single serving coffee maker having an offset needle reaching up vertically from the base of the housing, the recessed annular region avoiding the offset bottom needle. The coffee holder defines a frustoconical exterior and includes mesh filtering material for retaining brewing material inside the coffee holder. The mesh material may be a metal mesh or plastic mesh. The reusable coffee holder is configured for use in single serving coffee makers having the offset bottom needle and designed for single use cartridges.

The present application is a Continuation In Part of U.S. patent application Ser. No. 11/777,831 filed Jul. 13, 2007, a Continuation In Part of U.S. patent application Ser. No. 12/610,181 filed Oct. 30, 2009, and a Continuation In Part of U.S. patent application Ser. No. 12/620,584 filed Nov. 17, 2009, which applications are incorporated in their entirety herein by reference.

BACKGROUND OF THE INVENTION

The present invention relates to single serving coffee makers and in particular to a single serving reusable brewing material holder including a reusable mesh material to retain the brewing material in the holder.

Coffee is prepared in a coffee maker by measuring an amount of ground coffee into a coffee filter, closing a lid over the ground coffee, and providing a stream of hot water through the ground coffee. In recent years, single serving coffee makers have become very popular, for example, Keurig® coffee makers. U.S. Pat. Nos. 5,325,765 and 6,708,600 disclose a housing and cooperating filter cartridge for use in a Keurig® coffee maker. While the housing and cartridge of the '765 patent are very popular, the cost of single use cartridges far exceeds the cost of the brewing material contained in the cartridges. The '765 and '600 patents are herein incorporated by reference in its entirety.

BRIEF SUMMARY OF THE INVENTION

The present invention addresses the above and other needs by providing a single serving beverage filter cartridge which is formed by placing a single serving portion of brewing material into a reusable coffee holder having a lid and a base. The reusable coffee holder includes a recessed annular region at the bottom of a base of the holder and is insertable into a cartridge housing of a single serving coffee maker having an offset needle reaching up vertically from the base of the housing, the recessed annular region avoiding the offset bottom needle. The coffee holder defines a frustoconical exterior and includes mesh filtering material for retaining brewing material inside the coffee holder. The mesh material may be a metal mesh or plastic mesh. The reusable coffee holder is configured for use in single serving coffee makers having the offset bottom needle and designed for single use cartridges.

In accordance with one aspect of the invention, there is provided a coffee holder including a metal filter mesh material interposed between an interior and exterior of the holder to retain brewing material in the holder. The filter mesh material may be a metal or plastic mesh.

In accordance with another aspect of the invention, there is provided a coffee holder having a bottom with an annular recess. The holder fits into existing single serving coffee makers having an offset bottom needle and the annular recess provides clearance for the offset bottom needle.

In accordance with still another aspect of the invention, there is provided a coffee holder having an annular recessed region surrounding a stem. The stem extends downward from the bottom of the base. The holder fits into existing single serving coffee makers having an offset bottom needle and the annular recess around the stem provides clearance for the offset bottom needle.

In accordance with yet another aspect of the invention, there is provided a method for using a reusable coffee holder in a single serving coffee maker having an offset bottom needle. The method includes opening a lid of the reusable coffee holder, placing a single serving portion of brewing material into a holder base, closing the lid of the coffee holder, opening a coffee cartridge housing of the single serving coffee maker, placing the coffee holder into the coffee cartridge housing causing an offset bottom needle to reside in the annular recessed area in the bottom of the holder base, closing the coffee cartridge housing, and brewing a brewed beverage. The reusable coffee holder includes a holder lid, a frustoconical shaped coffee holder base, and a metal mesh filter attached to the coffee holder base and interposed between the interior and the exterior of the holder base and retaining brewing material deposited into the holder base through the holder top, and a holder lid closeable over the top of the holder base. The holder lid includes a center mating portion of the holder lid including a downward concave cavity for receiving a nozzle of a coffee maker and sealing against the coffee maker to prevent the escape of heated liquid during brewing. The a frustoconical shaped coffee holder base includes a smaller diameter bottom, a larger diameter top, an interior, an exterior, and a concave up, annular recessed area in the bottom of the holder base.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING

The above and other aspects, features and advantages of the present invention will be more apparent from the following more particular description thereof, presented in conjunction with the following drawings wherein:

FIG. 1 is a prior art single serving housing and filter cartridge.

FIG. 2 is a perspective view of a first single serving coffee holder according to the present invention.

FIG. 3 is a cross-sectional side view of the first single serving coffee holder according to the present invention.

FIG. 4 is a cross-sectional side view of the first single serving coffee holder according to the present invention in the prior art single serving housing.

FIG. 5 is a cross-sectional side view of a second single serving coffee holder according to the present invention.

FIG. 6 is a cross-sectional side view of the second single serving coffee holder according to the present invention in the prior art single serving housing.

Corresponding reference characters indicate corresponding components throughout the several views of the drawings.

DETAILED DESCRIPTION OF THE INVENTION

The following description is of the best mode presently contemplated for carrying out the invention. This description is not to be taken in a limiting sense, but is made merely for the purpose of describing one or more preferred embodiments of the invention. The scope of the invention should be determined with reference to the claims.

A prior art single serving housing 10 and single use filter cartridge 12 disclosed in U.S. Pat. Nos. 5,325,765 and 6,708,600 (incorporated by reference above) are shown in FIG. 1. The filter cartridge 12 includes a pierceable shell 14 and contains brewing material 16. An upper needle 20 penetrates the top of the shell 14 and an offset bottom needle 22 penetrates the shell 14 when the housing 10 is closed on the cartridge 12.

A perspective view of a first single serving coffee holder 30 according to the present invention is shown in FIG. 2. The coffee holder 30 includes a lid 32 and a base 34. The base 34 includes a larger diameter top 34 a and a smaller diameter bottom 34 b and is generally frustoconical in shape. A passage 40 in the lid 32 is provided for the needle 20. The bottom 34 b of the base 34 includes an annular recessed region 38 surrounding a stem 36 generally centered on the bottom 34 b of the base 34. The stem 36 extends downward from the bottom of the base 34. The coffee holder 30 defines an interior region 30 a and an exterior region 30 b. Lid 32 may be removably attachable to the base 34, or hingedly attached to the base 34. The removable lid 32 may be an interference fit to the base 34, or the lid 32 and base 34 may have cooperating threads to threadably attach, or the lid 32 may otherwise attached to the base 34.

A cross-sectional side view of the first coffee holder 30 is shown in FIG. 3 and a second cross-sectional view of the first coffee holder 30 in the prior art single serving housing 10 is shown in FIG. 4. A concave down mesh filter 42 holds the brewing material 16, and retains the brewing material 16 in the interior region 30 a of the coffee holder 30 separating the brewing material 16 from the exterior region 30 b of the coffee holder 30. The needle 20 reaches through the passage 40 in the lid 32 to inject hot liquid into the brewing material 16 to make a brewed drink. The annular recess 38 a provides clearance for the lower needle 22. A compliant ring 33 may be included to seal against the coffee maker.

The housing 30 is disclosed in FIG. 2 of U.S. patent application Ser. No. 11/777,831 filed Jul. 13, 2007 by the present applicant. The present application is a Continuation In Part (CIP) of the '831 application, which '831 application is incorporated by reference above.

The mesh filter 42 is disclosed in U.S. patent application Ser. No. 12/620,584 filed Nov. 17, 2009 by the present applicant, as a nylon mesh, metal mesh, or any material capable of holding the coffee while allowing a flow of heated water through the coffee. The present application is a Continuation In Part (CIP) of the '584 application, which '584 application is incorporated by reference above. Unlike filter paper, the mesh filter may be cleaned and reused, and may be removable from the housing 30 for cleaning.

A cross-sectional side view of a second coffee holder 50 according to the present invention is shown in FIG. 5 and a cross-sectional side view of the coffee holder 50 in the prior art single serving housing 10 is shown in FIG. 6. The coffee holder 50 includes the lid 32 and a base 52. The passage 40 in the lid 32 is provided for the needle 20. The base 52 includes an annular recessed region 38 b. The coffee holder 30 defines an interior region 30 a and an exterior region 30 b (see FIG. 2). The mesh filter 42 holds the brewing material 16, and retains the brewing material 16 in the interior region 30 a of the coffee holder 50 separating the brewing material 16 from the exterior region 30 b of the coffee holder 50. The needle 20 reaches through the passage 40 in the lid 32 to inject hot liquid into the brewing material 16 to make a brewed drink. A circular opening 54 in the bottom of the base 52 provides an annular recess 38 b providing clearance for the lower needle 22.

The housing 50 is disclosed in FIG. 6 of U.S. patent application Ser. No. 11/777,831 filed Jul. 13, 2007 by the present applicant for use with a coffee pod including filter paper and incorporated by reference above, and the use of the mesh filter 42 is disclosed in the '584 patent incorporated by reference above.

While the invention herein disclosed has been described by means of specific embodiments and applications thereof, numerous modifications and variations could be made thereto by those skilled in the art without departing from the scope of the invention set forth in the claims. 

1. A reusable coffee holder comprising: a frustoconical shaped coffee holder base comprising: a smaller diameter bottom; a larger diameter top; an interior; an exterior, and a concave up, annular recessed area in the bottom of the holder base; a holder lid closeable over the coffee holder top; and a mesh filter attached to the coffee holder and interposed between the interior and the exterior of the holder base and retaining brewing material deposited into the holder base through the holder top.
 2. The reusable coffee holder of claim 1, wherein the mesh filter is a metal mesh filter.
 3. The reusable coffee holder of claim 1, wherein the mesh filter is insertable and removable for cleaning from the holder base.
 4. The reusable coffee holder of claim 1, wherein the holder lid is hingedly attached to the holder base.
 5. The reusable coffee holder of claim 1, wherein the holder lid is detachably attachable to the holder base.
 6. The reusable coffee holder of claim 1, wherein the holder lid includes a male threaded portion and the holder base includes a female threaded portion and the holder lid is detachably attachable to the holder base by screwing the holder lid into the holder base and the coffee is sandwiched between the male threaded portion and the holder base to tamp the coffee.
 7. The reusable coffee holder of claim 1 wherein the holder lid includes a center mating portion configured to cooperate with a nozzle of a coffee maker and including a seal for cooperating with the nozzle to prevent the escape of heated liquid from the coffee holder.
 8. The reusable coffee holder of claim 7, wherein the center mating portion including a compliant seal for sealing against a pad portion of a coffee maker lid to prevent the escape of heated liquid from the coffee holder.
 9. The reusable coffee holder of claim 7, wherein the annular recessed region surrounds a stem extending downward from the bottom of the base of the housing allowing the holder to fit into existing single serving coffee makers having an offset bottom needle, the annular recess around the stem providing clearance for the offset bottom needle.
 10. A reusable coffee holder for use in a single serving coffee maker having an offset bottom needle for puncturing a single use coffee cartridge, the coffee holder comprising: a frustoconical shaped coffee holder base comprising: a smaller diameter bottom; a larger diameter top; an interior; an exterior, and clearance in the bottom of the holder base for the offset bottom needle of the single serving coffee maker; a metal mesh filter material attached to the coffee holder base and interposed between the interior and the exterior of the holder base and retaining brewing material deposited into the holder base through the holder top; and a holder lid closeable over the coffee holder top, the holder lid including a and sealing against the coffee maker to prevent the escape of heated liquid during brewing.
 11. A method for using a reusable coffee holder in a single serving coffee maker having an offset bottom needle, the method comprising: opening a lid of the reusable coffee holder, the reusable coffee holder comprising: a frustoconical shaped coffee holder base comprising: a smaller diameter bottom; a larger diameter top; an interior; an exterior, and a concave up, annular recessed area in the bottom of the holder base; a metal mesh filter attached to the coffee holder base and interposed between the interior and the exterior of the holder base and retaining brewing material deposited into the holder base through the holder top; and a holder lid closeable over the top of the holder base, the holder lid including a center mating portion of the holder lid including a downward concave cavity for receiving a nozzle of a coffee maker and sealing against the coffee maker to prevent the escape of heated liquid during brewing; placing a single serving portion of brewing material into the holder base; closing the lid of the coffee holder; opening a coffee cartridge housing of the single serving coffee maker; placing the coffee holder into the coffee cartridge housing causing the offset bottom needle to reside in the annular recessed area in the bottom of the holder base; closing the coffee cartridge housing; and brewing a brewed beverage. 